Replace and Report: NLP Assisted Radiology Report Generation

Kaveri Kale, Pushpak Bhattacharyya, Kshitij Jadhav


Abstract
Clinical practice frequently uses medical imaging for diagnosis and treatment. A significant challenge for automatic radiology report generation is that the radiology reports are long narratives consisting of multiple sentences for both abnormal and normal findings. Therefore, applying conventional image captioning approaches to generate the whole report proves to be insufficient, as these are designed to briefly describe images with short sentences. We propose a template-based approach to generate radiology reports from radiographs. Our approach involves the following: i) using a multilabel image classifier, produce the tags for the input radiograph; ii) using a transformer-based model, generate pathological descriptions (a description of abnormal findings seen on radiographs) from the tags generated in step (i); iii) using a BERT-based multi-label text classifier, find the spans in the normal report template to replace with the generated pathological descriptions; and iv) using a rule-based system, replace the identified span with the generated pathological description. We performed experiments with the two most popular radiology report datasets, IU Chest X-ray and MIMIC-CXR and demonstrated that the BLEU-1, ROUGE-L, METEOR, and CIDEr scores are better than the State-of-the-Art models by 25%, 36%, 44% and 48% respectively, on the IU X-RAY dataset. To the best of our knowledge, this is the first attempt to generate chest X-ray radiology reports by first creating small sentences for abnormal findings and then replacing them in the normal report template.
Anthology ID:
2023.findings-acl.683
Volume:
Findings of the Association for Computational Linguistics: ACL 2023
Month:
July
Year:
2023
Address:
Toronto, Canada
Editors:
Anna Rogers, Jordan Boyd-Graber, Naoaki Okazaki
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
10731–10742
Language:
URL:
https://aclanthology.org/2023.findings-acl.683
DOI:
10.18653/v1/2023.findings-acl.683
Bibkey:
Cite (ACL):
Kaveri Kale, Pushpak Bhattacharyya, and Kshitij Jadhav. 2023. Replace and Report: NLP Assisted Radiology Report Generation. In Findings of the Association for Computational Linguistics: ACL 2023, pages 10731–10742, Toronto, Canada. Association for Computational Linguistics.
Cite (Informal):
Replace and Report: NLP Assisted Radiology Report Generation (Kale et al., Findings 2023)
Copy Citation:
PDF:
https://aclanthology.org/2023.findings-acl.683.pdf
Video:
 https://aclanthology.org/2023.findings-acl.683.mp4